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| author |   Kevin Hilman <khilman@deeprootsystems.com> | 2009-04-02 16:56:57 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-02 19:04:50 -0700 |
| commit | 7274ec8bd71e99018642f474528ea7de4bb3ae25 (patch) | |
| tree | 3c2e719f696292afa0717f7111d174bdfc073f27 /include | |
| parent | memory_accessor: new interface for reading/writing persistent memory (diff) | |
| download | linux-dev-7274ec8bd71e99018642f474528ea7de4bb3ae25.tar.xz linux-dev-7274ec8bd71e99018642f474528ea7de4bb3ae25.zip | |
memory_accessor: implement the new memory_accessor interface for I2C EEPROM
In the case of at24, the platform code registers a 'setup' callback with
the at24_platform_data. When the at24 driver detects an EEPROM, it fills
out the read and write functions of the memory_accessor and calls the
setup callback passing the memory_accessor struct. The platform code can
then use the read/write functions in the memory_accessor struct for
reading and writing the EEPROM.
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/i2c/at24.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/i2c/at24.h b/include/linux/i2c/at24.h index f6edd522a929..8ace93024d60 100644 --- a/include/linux/i2c/at24.h +++ b/include/linux/i2c/at24.h @@ -2,6 +2,7 @@ #define _LINUX_AT24_H #include <linux/types.h> +#include <linux/memory.h> /* * As seen through Linux I2C, differences between the most common types of I2C @@ -23,6 +24,9 @@ struct at24_platform_data { #define AT24_FLAG_READONLY 0x40 /* sysfs-entry will be read-only */ #define AT24_FLAG_IRUGO 0x20 /* sysfs-entry will be world-readable */ #define AT24_FLAG_TAKE8ADDR 0x10 /* take always 8 addresses (24c00) */ + + void (*setup)(struct memory_accessor *, void *context); + void *context; }; #endif /* _LINUX_AT24_H */ |